CN201408683Y - Arc-extinguishing chamber structure for double-breakpoint small-sized circuit breaker - Google Patents
Arc-extinguishing chamber structure for double-breakpoint small-sized circuit breaker Download PDFInfo
- Publication number
- CN201408683Y CN201408683Y CN 200920071819 CN200920071819U CN201408683Y CN 201408683 Y CN201408683 Y CN 201408683Y CN 200920071819 CN200920071819 CN 200920071819 CN 200920071819 U CN200920071819 U CN 200920071819U CN 201408683 Y CN201408683 Y CN 201408683Y
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- China
- Prior art keywords
- arc
- upside
- circuit breaker
- control device
- magnetic conductive
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Abstract
An arc-extinguishing chamber structure for double-breakpoint small-sized circuit breaker is composed of a shell and a cover plate, wherein two arc-extinguishing chambers are arranged in the shell in parallel, a ceramic arc-baffle plate, an insulating arc-baffle cardboard and a magnetic conductance plate are respectively arranged on two sides of any one arc-extinguishing chamber from inside to outside, and insulating baffle plates are arranged between the two arc-extinguishing chambers. The double-breakpoint small-sized circuit breaker generates two breaking points in breaking circuits, two breaking points generate two electric arcs, the insulating baffle plates insulate the two electric arcs, and the two electric arcs are respectively extinguished in the first arc-extinguishing chamber andthe second arc-extinguishing chamber. Two electric arcs are insulated in two independent arc-extinguishing chambers, thereby avoiding generating secondary short circuits between the two electric arcs, and the arc-extinguishing ability is improved simultaneously.
Description
Technical field:
The utility model relates to electric field, relates in particular to circuit breaker, particularly miniature circuit breaker, and concrete is a kind of arc quenching chamber structure that is used for double break point miniature circuit breaker.
Background technology:
In the prior art, circuit breaker adopts single arc quenching chamber structure, and the arc quenching chamber structure of each utmost point is made up of arc control device, two magnetic conductive boards, two insulating barriers, housing and cover plates, and each utmost point has only a cut-off point, each utmost point has only arc control device, and its arc extinguishing ability and breaking capacity are limited.In the circuit breaker of double-breakpoint structure, single arc quenching chamber structure can't completely cut off the electric arc of two cut-off points, produces two electric arcs between two breakpoints and causes second short circuit, has influence on breaking current.
Summary of the invention:
The purpose of this utility model is to provide a kind of arc quenching chamber structure that is used for double break point miniature circuit breaker, and single arc quenching chamber structure that the described this arc quenching chamber structure that is used for double break point miniature circuit breaker will solve the middle-size and small-size circuit breaker of prior art can not be used for double break point miniature circuit breaker, arc extinguishing technical problem limited in one's ability.
This arc quenching chamber structure that is used for double break point miniature circuit breaker of the present utility model is made of a housing and a cover plate, described cover plate is arranged on the described housing, be provided with inner chamber in the housing, wherein, in the described inner chamber, the bottom of housing is provided with one first magnetic conductive board, the upside of described first magnetic conductive board is provided with one first insulation arc cardboard, the upside of the described first insulation arc cardboard is provided with one first ceramic flash barrier, the upside of the described first ceramic flash barrier is provided with one first arc control device, the upside of described first arc control device is provided with one second ceramic flash barrier, the upside of the described second ceramic flash barrier is provided with one second insulation arc cardboard, the upside of the described second insulation arc cardboard is provided with one second magnetic conductive board, the upside of described second magnetic conductive board is provided with an insulating barrier, the upside of described insulating barrier is provided with one the 3rd magnetic conductive board, the upside of described the 3rd magnetic conductive board is provided with one the 3rd insulation arc cardboard, the upside of described the 3rd insulation arc cardboard is provided with one the 3rd ceramic flash barrier, the upside of described the 3rd ceramic flash barrier is provided with one second arc control device, the upside of described second arc control device is provided with one the 4th ceramic flash barrier, the upside of described the 4th ceramic flash barrier is provided with one the 4th insulation arc cardboard, and the upside of described the 4th insulation arc cardboard is provided with one the 4th magnetic conductive board.
Further, be provided with a moving contact and a fixed contact in first arc control device, be provided with a moving contact and a fixed contact in second arc control device.
Operation principle of the present utility model is: produce two cut-off points during double break point miniature circuit breaker minute deenergizing, two cut-off points produce two electric arcs, and insulating barrier is isolated two electric arcs, and two electric arcs extinguish in first arc control device and second arc control device respectively.Article two, electric arc is isolated in two independently in the arc control device, has avoided between two electric arcs second short circuit taking place, and simultaneously, the arc extinguishing ability is improved.
The utility model is compared with prior art, and its effect is actively with tangible.The utility model is provided with two independently arc control device in double break point miniature circuit breaker, isolated and difference arc extinguishing has been avoided between two electric arcs second short circuit taking place with two breakpoints of circuit breaker, has improved the arc extinguishing ability.
Description of drawings:
Fig. 1 is the structural representation that is used for the arc quenching chamber structure of double break point miniature circuit breaker of the present utility model.
Embodiment:
Embodiment 1:
As shown in Figure 1, the arc quenching chamber structure that is used for double break point miniature circuit breaker of the present utility model, constitute by a housing 7 and a cover plate 1, described cover plate 1 is arranged on the described housing 7, be provided with inner chamber in the housing 7, wherein, in the described inner chamber, the bottom of housing 7 is provided with one first magnetic conductive board 21, the upside of described first magnetic conductive board 21 is provided with one first insulation arc cardboard 31, the upside of the described first insulation arc cardboard 31 is provided with one first ceramic flash barrier 41, the upside of the described first ceramic flash barrier 41 is provided with one first arc control device 51, the upside of described first arc control device 51 is provided with one second ceramic flash barrier 42, the upside of the described second ceramic flash barrier 42 is provided with one second insulation arc cardboard 32, the upside of the described second insulation arc cardboard 32 is provided with one second magnetic conductive board 22, the upside of described second magnetic conductive board 22 is provided with an insulating barrier 6, the upside of described insulating barrier 6 is provided with one the 3rd magnetic conductive board 23, the upside of described the 3rd magnetic conductive board 23 is provided with one the 3rd insulation arc cardboard 33, the upside of described the 3rd insulation arc cardboard 33 is provided with one the 3rd ceramic flash barrier 43, the upside of the described the 3rd ceramic flash barrier 43 is provided with one second arc control device 52, the upside of described second arc control device 52 is provided with one the 4th ceramic flash barrier 44, the upside of the described the 4th ceramic flash barrier 44 is provided with one the 4th insulation arc cardboard 34, and the upside of described the 4th insulation arc cardboard 34 is provided with one the 4th magnetic conductive board 24.
Further, be provided with a moving contact (not shown) and a fixed contact (not shown) in first arc control device 51, be provided with a moving contact (not shown) and a fixed contact (not shown) in second arc control device 52.
The course of work of present embodiment is: produce two cut-off points during double break point miniature circuit breaker minute deenergizing, two cut-off points produce two electric arcs, and insulating barrier 6 is isolated two electric arcs, and two electric arcs extinguish in first arc control device 51 and second arc control device 52 respectively.Article two, electric arc is isolated in two independently in the arc control device, has avoided between two electric arcs second short circuit taking place, and simultaneously, the arc extinguishing ability is improved.
Claims (2)
1. arc quenching chamber structure that is used for double break point miniature circuit breaker, constitute by a housing and a cover plate, described cover plate is arranged on the described housing, be provided with inner chamber in the housing, it is characterized in that: in the described inner chamber, the bottom of housing is provided with one first magnetic conductive board, the upside of described first magnetic conductive board is provided with one first insulation arc cardboard, the upside of the described first insulation arc cardboard is provided with one first ceramic flash barrier, the upside of the described first ceramic flash barrier is provided with one first arc control device, the upside of described first arc control device is provided with one second ceramic flash barrier, the upside of the described second ceramic flash barrier is provided with one second insulation arc cardboard, the upside of the described second insulation arc cardboard is provided with one second magnetic conductive board, the upside of described second magnetic conductive board is provided with an insulating barrier, the upside of described insulating barrier is provided with one the 3rd magnetic conductive board, the upside of described the 3rd magnetic conductive board is provided with one the 3rd insulation arc cardboard, the upside of described the 3rd insulation arc cardboard is provided with one the 3rd ceramic flash barrier, the upside of described the 3rd ceramic flash barrier is provided with one second arc control device, the upside of described second arc control device is provided with one the 4th ceramic flash barrier, the upside of described the 4th ceramic flash barrier is provided with one the 4th insulation arc cardboard, and the upside of described the 4th insulation arc cardboard is provided with one the 4th magnetic conductive board.
2. the arc quenching chamber structure that is used for double break point miniature circuit breaker as claimed in claim 1 is characterized in that: be provided with a moving contact and a fixed contact in first arc control device, be provided with a moving contact and a fixed contact in second arc control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920071819 CN201408683Y (en) | 2009-05-07 | 2009-05-07 | Arc-extinguishing chamber structure for double-breakpoint small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920071819 CN201408683Y (en) | 2009-05-07 | 2009-05-07 | Arc-extinguishing chamber structure for double-breakpoint small-sized circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408683Y true CN201408683Y (en) | 2010-02-17 |
Family
ID=41679627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920071819 Expired - Lifetime CN201408683Y (en) | 2009-05-07 | 2009-05-07 | Arc-extinguishing chamber structure for double-breakpoint small-sized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408683Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339691A (en) * | 2010-07-15 | 2012-02-01 | 北京翠祥电器元件有限公司 | Combined magnetic-quenching device |
| CN102339689A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | Circuit breaker having arc insulating apparatus |
| CN104091706A (en) * | 2014-07-29 | 2014-10-08 | 厦门宏发电力电器有限公司 | Relay and arc protection structure thereof |
| CN110391117A (en) * | 2018-04-19 | 2019-10-29 | Abb股份公司 | Low-voltage circuit breaker |
-
2009
- 2009-05-07 CN CN 200920071819 patent/CN201408683Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339691A (en) * | 2010-07-15 | 2012-02-01 | 北京翠祥电器元件有限公司 | Combined magnetic-quenching device |
| CN102339689A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | Circuit breaker having arc insulating apparatus |
| CN104091706A (en) * | 2014-07-29 | 2014-10-08 | 厦门宏发电力电器有限公司 | Relay and arc protection structure thereof |
| CN104091706B (en) * | 2014-07-29 | 2016-08-10 | 厦门宏发电力电器有限公司 | A kind of relay and arc protection structure thereof |
| CN110391117A (en) * | 2018-04-19 | 2019-10-29 | Abb股份公司 | Low-voltage circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |
|
| CX01 | Expiry of patent term |